## Function Zdotu

(

**zdotu** < n > < zx > < incx > < zy > < incy > )

Syntax

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(ZDOTU n x incx y incy)

Purpose

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ZDOTU <- X^T Y

Complex precision inner product of X,Y.

Arguments

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N (input) FIXNUM

Number of elements of X,Y to be operated on.

X (input) (SIMPLE-ARRAY (COMPLEX DOUBLE-FLOAT) (*)) represented as (SIMPLE-ARRAY DOUBLE-FLOAT (*))

INCX (input) FIXNUM

Determines the position of the elements in X. Usually

INCX is 1. If INCX is bigger than 1 then the elements

considered in the operations are:

X(0),X(2*INCX), ... , X(2*(N-1)*INCX)

Y (input) (SIMPLE-ARRAY (COMPLEX DOUBLE-FLOAT) (*)) represented as (SIMPLE-ARRAY DOUBLE-FLOAT (*))

INCY (input) FIXNUM

Determines the position of the elements in Y. Usually

INCY is 1. If INCY is bigger than 1 then the elements

considered in the operations are:

Y(0),Y(2*INCY), ... , Y(2*(N-1)*INCY)